getYouTubeThumbnail function not returning the correct thumbnail URL?

I wrote a function to extract the video ID from a YouTube URL and return the corresponding thumbnail image URL. However, the function doesn’t seem to be working as expected.

const getYouTubeThumbnail = (url: string) => {
  const videoId = url.split("v=")[1];
  return https://img.youtube.com/vi/${videoId}/hqdefault.jpg;
};

When I pass a YouTube video URL like https://www.youtube.com/watch?v=-jz8mrwU_Fc&ab_channel=10Alytics, I expect to get https://img.youtube.com/vi/dQw4w9WgXcQ/hqdefault.jpg, but instead, it seems to either not work or return an incorrect URL.

What am I doing wrong? Is there a better way to extract the video ID?

the function above but it doesn’t work as intended